Bag closure



April 9, 1935.

M. ROSENFELD BAG CLOSURE Filed June 2, 1934 INVENTOR MAURICE ROSENFELD ATTORNEY Patented Apr. 9, 1935 were STATES BAG CLOSURE Maurice Rosenfeld, BrooklyrnN. Y. Application June 2, 1934, Serial No. 728,659

3 Claims.

This invention relates to a closure device for merchandise receptacles such as paper bags and envelopes.

An object of the invention is a closure device which may be produced economically but which nevertheless is efficient in operation. Closuredevices with which I am familiar not only require more material in their manufacture but are more expensive on account of the time-consuming op erations necessary.

Closure devices of the kind to which my inven-I tion relates usually consist of a button or similar fastener which is secured to the wall of the'receptacle, the latter having an opening or openings formed therein through which portions of the fastener may be passed and the fastener fiat.- tened out. 1

It has been proposed to provide a flexible button or fastening device which may be'flexed and portions thereof passed through a slot formed in the closing flap of the receptacle. In devices'of this sort, so far as I know, a slot has been cutout of the flap and a reenforcementhas been provided so that the fastener will more securely hold the 25. flap in its closed position. In the manufacture of such a closure, therefore, it is necessary to apply the reenforcing material asa separate operation. Furthermore, the reenforcing washers,

whether they be round or elongated, must be separately made and accurately applied to properly coincide with the aperture in theflap.

A feature of the present invention resides in making an I-shaped out directly in the material of the flap and, since this may be done by a die, it may be formed during the manufacture of the bag or envelope, without in anyway interfering with the speed at which the envelope or bag machine is being operated and without requiring further addition to such machine other than a die of proper shape and size.

Other features and advantages will be apparent from the following description and claims when taken in connection with the drawing in which: a

Figure 1 is a front view of the upper portion of a receptacle showing my improved closure device applied thereto; Figure 2 is a perspective view showing the clos ing device in operative position;

Figure 3 is a view similar to Figure 1 showing a different form of fastener; and

Figure 4 is a perspective view showing the fastener of Figure 3 in operative position.

5 Referring to the drawing, the merchandise receptacle shown in Figure 1 may be a bag or an envelope having a body portion i and a flap ,2 which is adapted to be folded over onto the-wall of the bag to close the mouth thereof. In the form of construction shown inFigure 1 a button 3 is centrally secured to the front'wall of'the receptacle, said button being composed of paper, fibre or other suitable flexible material. In the fiap 2 there is an I-shaped cut, the longer element 4 of which has short cuts 5 at each end thereof. The button 3, being flexible, maybe bent upwardly and the peripheral portionspassed through a the opening in the flap and flattened out as shown in Figure 2. .The I-shaped cut in the flap forms, in effect, a winged opening, and when the button is deformed and passed through the opening and the button flattened out, the wings-6 formed by the I-shaped out are folded back byengagement of the button therewith. The edges of the wings form a reenforcement and more securely lock the flap and bag wall together. M

l The construction shown in Figure 3 shows the I-shaped cuts in a different position which adapt the closure device to be used with a metal fastener of the ordinary type. The action, however, of the fastener to engage and fold over the wings of the opening formed by the I-shaped cut is the same as in the Figure 1 construction and is illustrated in Figure 4.

The I-shaped cut may be made at any angle found most convenient or desirable, especially where a roundbutton is used.

From the above it will be apparent that I have provided an extremely simple form of closure device which is effective to lock the flap of the bag wall but which may be manufactured at low cost.

The I-shaped cut may be made by a single die operating in the manner similar to the dies 56 shown in the patent to Poppe No. 1,798,168, March 31, 1931. These cuts may be made in the web of paper prior to folding the same to form a bag tube and the bag machine is not in any wise slowed down by the use of an extra die for the out in the bag lip. The invention is' therefore advantageous from the standpoint of production. Of course the fastener, whether it be a button or ordinary metal fastener, may be applied as a separate operation.

What I claim is:- I

l. Amerchandisereceptacle having a closing flap, said flap having an I-shaped cut therein providing a winged opening, and a flexible fastening' device secured to the receptacle wall, said device adapted, when flexed, to have portions thereof passed through the opening in the flap, .55

the wings of the opening being adapted to be engaged and folded back when thevfastening device is flattened.

2. A merchandise receptacle having a closing flap with an I-shaped out therein, a flexible fastener, portions of which, when flexed, being adapted to be passed through said out and when folded flat to deform the flap material adjacent the long element of the I-cut and cause said material to be folded back as a wing to 'reenforce the edges in contact with the fastening device.

A merchandise receptacle having a closing to be flexed and in the flexed condition passed through said opening, said fastener when subsequently flattened, adapted to engage and fold. back the wings of said opening.

MAURICE RosENFEm. 

